Partition strip arrester apparatus



2 Sheets-Sheet 1 Filed March 2, 1960 May 19, 1964 c. A. HEYNE PARTITIONSTRIP ARRESTER APPARATUS 2 Sheets-Sheet 2 Filed March 2, 1960 UnitedStates Patent 3,133,648 PARTETTQN STRIP ARRESTER APPARATUS Clarence A.Heyne, Toledo, fihio, assignor to Gwens- Illinois Glass Company, acorporation of Ohio Filed Mar. 2, 1960, Ser. No. 12,386 4 Claims. ((11.2141) This invention relates to a partition arrester apparatus and moreparticularly to partition arrester apparatus for use in conjunction withpartition sawing apparatus of the type described in US. Patent No.2,855,009, issued to F. A. McCormick.

The partition saw, mentioned above, is designed to automatically cut abundle of paperboard partition strips into shorter lengths. A rsum ofits operation is as follows: A bundle of strips is fed longitudinallyinto the machine until the bundle reaches a gauge rail. The bundle isclamped and moved transversely through the path of a band saw whichsevers the forward end of the bundle, i.e., the end between the gaugerail and band saw, into strips of the proper length. The bundle is thenreturned to its former position and again moved longitudinally againstthe gauge rail, preparatory for the next cut. These operations aresequentially repeated until the portion which is clamped is too small tobe cut to the proper length. This portion then falls through a cut-outin the worktable as scrap.

There are two problems encountered in the operation of this machine.operation of the machine wherein the partition strips bounce when theystrike the gauge rail. This results in misalignment of the end edges ofthe strips or may result in improper gauge, variance in the gauge, etc.of the length of strip desired to be cut; and accordingly, when thebundle is severed the resulting partition strips are of non-uniformlengths. The second problem arises when the last group of strips in abundle is cut. 011 the last cut the clamping device, which then clampsthe tail end of a bundle, compresses the trailing end edges causing theunclamped leading edges to fan out or become spaced apart. This resultsin strips becoming cocked in the channel of flow and causes problems inregard to subsequent operations.

My invention relates primarily to a spring-loaded bar having a forwardlyinclined knife edge which rides on the top edges of the forwardly movingpartition strips and engages backwardly moving partitions, therebypreventing partitions which have struck the gauge rail from bouncingaway, and preventing the leading end edges of the strips from movingbackward in an arcuate path, i.e., fanning out.

Accordingly, it is an object of this invention to provide apparatus forpermitting the forward movement of strips of sheet-like material andrestraining the backward movement of strips of sheet-like material,wherein both of said movements are along the same definite path oftravel.

Another object of this invention is to provide apparatus for restrainingpartition strips against backward movement after striking a stationarystop.

Still another object of this invention is the provision of apparatus forpreventing the leading end edges of a bundle of partition strips fromfanning out when they are gripped near their trailing edges.

A still further object of my invention is to provide an inexpensiveattachment for improving the uniformity of strips cut to length in apartition sawing apparatus.

The specific nature of this invention, as well as other objects andadvantages thereof, will become apparent to those skilled in the artfrom the following detailed description taken in conjunction with theannexed sheets One arises principally in high speed I of drawings, onwhich, by way of example only, the preferred embodiment of thisinvention is illustrated.

In the drawings:

FIG. 1 is a plan view of the apparatus incorporating my inventionmounted on a partition saw of the type described in US. Patent No.2,855,009;

FIG. 2 is a vertical sectional view on line 2-2 of FIG. 1;

FIG. 3 is a horizontal sectional view on line 3-3 of FIG. 2; and,

FIG. 4 is a vertical sectional view on line 4-4 of FIG. 3.

Referring to FIG. 1, the partition arrester of my invention is shownmounted on the gauge rail 76 of a partion sawing apparatus as disclosedin US. Patent No. 2,855,009, issued to F. A. McCormick.

Basically, the partition sawing apparatus of the abovementioned patentcomprises, in part, a table 70, and clamping means 71, which is mountedon guide rails 72 and moved longitudinally of the table by connectingrod 73 and air cylinder 74, for clamping and moving a bundle ofpaperboard partition strips longitudinally of the table against a gaugerail 76. After the clamping means 71 releases the bundle 75, the bundleis then gripped and moved transversely of the table into the path of theband saws 77 (by apparatus not shown herein). Strips 79, which have beencut to length, pass between the aforementioned gauge rail 76 and a sec-0nd parallel gauge rail 78.

Referring now to FIGS. 2-4, and more particularly my invention, thegauge rail 76, which has a horizontal base portion, is secured to thetable 70 by means of fasteners 11. Spaced vertically above the baseportion and welded to the gauge rail 76 is a horizontaltrapezoidal-shaped support plate 12 (FIG. 3) which supports theoperating parts of my invention. Two vertically extending bracketmembers 14 and 15 are secured by means of screws 13 to one free edge ofthe support plate. These bracket members have at their upper endshorizontal flanges 16 and 17 which extend over the support plate 12(FIG. 2). These flanges 16 and 17 have vertical holes 18 and 19 (FIG.3), which support the upper ends of two guide rods 20 and 21. The rodsare secured to the flanges by means of press-fitted pins 22.

The guide rods 20 and 21 extend vertically downwardly from the flanges16 and 17 and through spaced holes 23 provided in the support plate 12(FIG. 4). The lower ends of these guide rods are secured to the supportplate by means of press-fitted pins 25.

Straddling and secured to the bracket members 14 and 15 by means ofscrews 26 is a crossarm 27. Intermediate the integral end flanges 28 ofthe crossarm 27 is a vertical journal bearing 29. This journal 29 hasthe diametrically reduced non-threaded portion 31 of a screw 30extending upwardly therethrough. The upper end of this screw is rigidlyand non-rotatably secured to the lower collar portion 32 of a manuallyoperated handwheel 36 by means of a pin 33. The collar portion 32, whichrests on the upper surface of the crossarm 27, maintains the screw infixed elevation and rotatable relationship on the crossarm.

That portion of the screw 30 which depends from the crossarm is threadedwith matching female threads 37a of a carrier 37, which is locatedintermediate the support plate 12 and the bracket flanges 16 and 17. The

carrierhas two horizontally spaced apart guide holes 38 (FIG. 4) throughwhich the guide rods 20 and 21 extend, thereby preventing rotation ofthe carrier relative to the support plate 12 and the gauge rail 76. Thescrew, and its support structure, and the carrier provide 3 a supportingplatform which is vertically adjustable relative to the table '70.

The center portion of the carrier 37 supports a limit switch L1, whichcorresponds to the limit switch L1 of US. Patent No. 2,855,009. Locatedbetween the gauge rail '76 and the two guide holes 38 are provided, asan integral part of the carrier 37, two pairs of clevis-like verticalflanges 40. The vertical flanges 4-0 have horizontal holes 42 whichcarry hinge pins 43. When the carrier is at its lowermost position, asshown on FIGS. 2 and 3, the flanges 40 extend through cut-outs 56 in thesupport plate 12. I

Pivotally mounted on the hinge pins 43 are two L- shaped arms 60 eachhaving vertical and horizontal portions, the latter portions extendingthrough cut-outs 50 in the gauge rail when the carrier is adjusted toits lowermost position. The arms 60 may be raised to overlie the gaugerail 76. In the present invention, the arms 60 may be so constructedwith relation to the gauge rail 76 that the desired flexibility ofadjustment of the arrester may be obtained. This adjustment isaccomplished in the present embodiment of the invention throughoperation of the handscrew 30 on the carriage 37, as described above.Located at the lower ends of the vertical portions are pivot bearings 44which are mounted on hinge pins 43. Intermediate the ends of theL-shaped arms are slots 45 in which the upper ends of extension springs45 or similar resilient means as an air spring, dash-pot, etc. aresecured as at the pins 47. The lower ends of the springs are secured bymeans of pins 49 to plates 41 integral with the sides of the flanges 40.These plates 41 also serve to limit the clockwise rotational movement(FIGS. 2 and 4) of the arms 60. The pivotal arms 60, and theirassociated springs, provide spring-loaded support means for thestructure which is to be described hereafter.

Welded to the free ends of the arms 60 and located parallel to the gaugerail 76 are barb-like means. The barb-like means comprise a bar 51having at its lower end a forwardly inclined surface 52 which in turnhas at its lower end a knife-like edge 53. The upper end of the bar 51is connected by means of an adjustable rod 55 to the limit switch L1.

In operation, the handwheel 36 is rotated to vertically adjust thecarrier 37 and hence the inclined surface 52 so that the inclinedsurface 52 will lie partly in the path of travel of the top edges of thecorrugated strips '75. Forwardly moving strips will strike the inclinedsurface 52 of the bar 51 thereby rotating the bar and the arm about thehinge pin 43 in a counterclockwise direction (FIGS. 2 and 4) and againstthe extension springs 46. The upward and backward movement of the bar 51will close the limit switch L1 which is connected thereto by means ofthe adjustable rod 55. The function performed by the limit switch L1 isdisclosed in U.S. Patent No. 2,855,009. The spring tension provided bysprings 46 and applied to the supporting arms 60 will assist in keepingthe knife edge 53 in contact with the top edges of the strips. This willcause the edge 53 to tend to bite into the bundle of strips 75.

As the strips are brought against and strike the gauge rail 76 they willtend to bounce backwardly. In so doing, they will move against the knifeedge 53, which, because of its inclination and because of the downwardurging of the springs, will function in the same manner as a barb andengage the strips, thereby preventing backward movement of the strips.The strips may be easily removed without raising the knife edge bymoving them transversely of the table and parallel to the gauge rail. Asmay be seen on FIG. 1, when the bundles are moved transversely on thetable between guide rails 76 and 78, the strips slide out from under the4 knife edge of the bar 51 after the saw 77 has performed the cuttingoperation. Thus, the bundle of strips is arrested and maintained by theinvention until after cutting to assure uniformity of length of thestrips as they are cut to the shorter lengths.

It will, of course, be understood that various details of constructionmay be modified through a wide range without departing from theprinciples of this invention, and it is not, therefore, the purpose tolimit the patent granted hereon otherwise than necessitated by the scopeof the appended claims.

I claim:

1. In apparatus having means for frictionally engaging and advancing abundle of strips of sheet material on edge in a forward directionagainst a stationary guide panel and means for moving said bundletransversely after it has come to rest at said guide panel, theimprovement comprising: an arrester bar positioned generally parallel toand spaced from said panel, said bar having a downwardly and forwardlyinclined surface positioned to contact the top edges of said forwardlymoving strips, said surface terminating at its lower end in an edgeadapted to engage backwardly moving strips, and means for resilientlysupporting said arrester bar in said position, whereby a forwardlymoving bundle of strips will engage said inclined surface, raise the baragainst said resilient supporting means and move past the bar to thestationary panel, and whereby strips tending to move backwardly afterstriking said panel will be restrained by the engagement of said edgewith such strips.

2. The improvement defined in claim 1, and a limit switch operativelyconnected to the means for moving said bundle transversely, and meansfor operatively connecting said switch to said bar whereby the raisingof said bar will actuate said switch.

3. Apparatus for uniformly arresting the movement of a bundle ofpartition strips that are moved forwardly on edge by means thatfrictionally engage and advance said bundle, comprising, a stationaryguide panel positioned transversely to the path of said strips, saidpanel arranged to halt the forward progress of said strips, an arresterbar positioned generally parallel to and spaced from said panel, saidbar having a downwardly and forwardly inclined surface positioned tocontact the top edges of said forwardly moving strips, said surfaceterminating at its lower end in a forwardly inclined knifelike edge,said edge extending across the width of said bundle, and means forresiliently supporting said arrester bar in said position, wherebyforwardly moving strips will strike the forwardly inclined surface,raise the bar against said resilient supporting means and move past thebar to the stationary panel, and whereby strips tending to movebackwardly after striking said panel will be restrained by theengagement of said knife-like edge with such strips.

4. Apparatus as defined in claim 3, wherein said means comprise meansfor movably supporting said arrester bar in said position so that saidbar is restrained against downward movement but is free to move upwardlyout of the path of a forwardly moving bundle, and means for resilientlyrestraining upward movement of said bar.

References Cited in the file of this patent UNITED STATES PATENTS688,811 Abbott Dec. 17, 1901 1,090,297 Greenwell Mar. 17, 1914 2,249,651Gilbert July 15, 1941 2,855,009 McCormick Oct. 7, 1958 FOREIGN PATENTS207,054 Great Britain Nov. 22, 1923

1. IN APPARATUS HAVING MEANS FOR FRICTIONALLY ENGAGING AND ADVANCING A BUNDLE OF STRIPS OF SHEET MATERIAL ON EDGE IN A FORWARD DIRECTION AGAINST A STATIONARY GUIDE PANEL AND MEANS FOR MOVING SAID BUNDLE TRANSVERSELY AFTER IT HAS COME TO REST AT SAID GUIDE PANEL, THE IMPROVEMENT COMPRISING: AN ARRESTER BAR POSITIONED GENERALLY PARALLEL TO AND SPACED FROM SAID PANEL, SAID BAR HAVING A DOWNWARDLY AND FORWARDLY INCLINED SURFACE POSITIONED TO CONTACT THE TOP EDGES OF SAID FORWARDLY MOVING STRIPS, SAID SURFACE TERMINATING AT ITS LOWER END IN AN EDGE ADAPTED TO ENGAGE BACKWARDLY MOVING STRIPS, AND MEANS FOR RESILIENTLY SUPPORTING SAID ARRESTER BAR IN 